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Pages: 1 Divemaster MAME Fan Reged: 07/14/09 Posts: 164 Send PM Pepper2? #391094 - 06/18/21 08:13 PM Reply Not 100% sure but I think there is supposed to be background music to this game. ICEknight MAME Fan Reged: 07/06/15 Posts: 166 Send PM Re: Pepper2? [Re: Divemaster] #391095 - 06/18/21 08:55 PM Reply > Not 100% sure but I think there is supposed to be background music to this game. This looks like a possible regression: Please report it at MameTesters, so that the devs will see it: https://mametesters.org/view_all_bug_page.php Osso1 Reged: 10/17/04 Posts: 251 Send PM Re: Pepper2? [Re: ICEknight] #391101 - 06/18/21 09:55 PM Reply The pepper2 set recently got a supposedly newer set of sound ROMs. With them it fails the self test. I took a quick glance and I believe the recently added rev 2 sound ROMs are bad dumps. If compared to the old supposedly rev 1 ROMs they have the following changes. 5a: 1 byte change at 58d. Changes a LDA (a9) to a NOP (89). By changing this back the melody is restored but the game still fails the self test 6a: 2 bytes changed: 1f to 0f at 5ca, 2f to 0f at 22c So 3 bytes changed total which cause the self test to fail and the first one also causes the melody to go missing. . Haze Reged: 09/23/03 Posts: 5245 Send PM Re: Pepper2? [Re: Osso1] #391110 - 06/20/21 12:20 AM Reply > The pepper2 set recently got a supposedly newer set of sound ROMs. With them it fails > the self test. > I took a quick glance and I believe the recently added rev 2 sound ROMs are bad > dumps. If compared to the old supposedly rev 1 ROMs they have the following changes. > > 5a: 1 byte change at 58d. Changes a LDA (a9) to a NOP (89). By changing this back the > melody is restored but the game still fails the self test > > 6a: 2 bytes changed: 1f to 0f at 5ca, 2f to 0f at 22c > > So 3 bytes changed total which cause the self test to fail and the first one also > causes the melody to go missing. yes, those look like bitrot, should really have been checked before they went in.. we're going to see more and more redumps / new dumps where ROMs have gone rotten, they weren't built to last this long. Vas Crabb BOFH Reged: 12/13/05 Posts: 4462 Loc: Melbourne, Australia Send PM Re: Pepper2? [Re: Haze] #391111 - 06/20/21 07:26 AM Reply > > The pepper2 set recently got a supposedly newer set of sound ROMs. With them it fails > > the self test. > > I took a quick glance and I believe the recently added rev 2 sound ROMs are bad > > dumps. If compared to the old supposedly rev 1 ROMs they have the following > changes. > > > > 5a: 1 byte change at 58d. Changes a LDA (a9) to a NOP (89). By changing this back the > > melody is restored but the game still fails the self test > > > > 6a: 2 bytes changed: 1f to 0f at 5ca, 2f to 0f at 22c > > > > So 3 bytes changed total which cause the self test to fail and the first one also > > causes the melody to go missing. > > yes, those look like bitrot, should really have been checked before they went in.. > > we're going to see more and more redumps / new dumps where ROMs have gone rotten, > they weren't built to last this long. So can someone remove it and slap around the person who dumped it, as well as the person who pushed the change without checking it was sane? Pages: 1

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